Report: 22 killed in Moscow train derailment

By Alla Eshchenko, Laura Smith-Spark and Holly Yan, CNN

Updated 11:22 PM ET, Tue July 15, 2014

Photos: Moscow train derailment6 photos

Moscow train derailment – Paramedics and firefighters carry an injured man after a metro train derailed in Moscow on Tuesday, July 15. It was not immediately clear what caused the derailment, which took place during morning rush hour in the Russian capital.

Moscow train derailment – Rescuers work at the site of the accident on July 15. The rescue operation had become a recovery operation by the afternoon as emergency workers sought to free the remaining bodies from within the mangled train cars.

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Photos: Moscow train derailment6 photos

Moscow train derailment – One of the injured passengers makes a call after being rescued and treated by paramedics.

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Photos: Moscow train derailment6 photos

Moscow train derailment – Dozens of ambulances arrived at the scene, along with three helicopters, to help shuttle the injured to hospitals, according to the state-run ITAR-Tass news agency.